Preheat oven to 375F
Spray a 9x13” pan with non-stick spray.
In the bowl of a stand mixer, combine sugar, baking powder, flour, zest and salt.
Add chopped up butter, egg, and vanilla and mix until the the mixture is crumbly.
Pour a little less than ¾ of the mixture into the bottom of the pan and using your hands, spread evenly along the bottom of the pan.
Used a measuring cup to evenly pack down.
For the filling, stir together the berries, sugar, cornstarch and juice and spread evenly on the crust.
Sprinkle the remaining topping over the fruit.
Bake about 40-45 minutes or until the top is light golden brown and the fruit is bubbling
